The identification of soil moisture as a factor of drought in cilutung watershed during indian ocean dipole year

D. S.D. Arlan, E. Kusratmoko, R. Hernina

Research output: Contribution to journalConference articlepeer-review

Abstract

The Indian Ocean Dipole event in 2019 has caused several drought events in the Cilutung Watershed. The information about the spatial and temporal soil moisture distribution along its changes is needed to identify soil moisture values as a drought factor in the Cilutung Watershed. The Landsat 8 OLI-TIRS data used to get the value of soil moisture based on Soil Moisture Index (SMI) method by applying the triangle method between Land Surface Temperature (LST) and Normalized Difference Vegetation Index (NDVI). This study analyses the spatial patterns of soil moisture and identifies physical characteristics that are forming in the areas with dry and very dry soil moisture values in the Cilutung Watershed during the dry period in 2019. The results showed that in the Cilutung Watershed during the dry month period in 2019, the Soil Moisture Index value would be higher on steep slopes, with the land-use consisting of shrubs, forests and mixed dryland agriculture, with the type of soils, red-yellow podzolic while the Soil Moisture Index value would be lower on the flat slopes, with the land-use consisting of residential land and open land, with the type of soils grumusol. Based on the K-Means grouping analysis method, the areas with dry and very dry soil moisture values in the Cilutung Watershed tends to have physical characteristics of flat slopes, the type of land use such as the settlement, mixed dryland agriculture, open land and rice fields, with the soil types grumusol, latosol and andosol.

Original languageEnglish
Article number012017
JournalIOP Conference Series: Earth and Environmental Science
Volume1089
Issue number1
DOIs
Publication statusPublished - 2022
Event4th International Geography Seminar 2020, IGEOS 2020 - Virtual, Online
Duration: 29 Sept 202030 Sept 2020

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